Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations
For tailored functionalization of cellulose based papers, the interaction between paper fibers and functional additives must be understood. Planar cellulose surfaces represent a suitable model system for studying the binding of additives. In this work, polyelectrolyte multilayers (PEMs) are prepared...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Polymers |
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| Online Access: | https://www.mdpi.com/2073-4360/13/3/435 |
| _version_ | 1797405879011639296 |
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| author | Cassia Lux Thomas Tilger Ramsia Geisler Olaf Soltwedel Regine von Klitzing |
| author_facet | Cassia Lux Thomas Tilger Ramsia Geisler Olaf Soltwedel Regine von Klitzing |
| author_sort | Cassia Lux |
| collection | DOAJ |
| description | For tailored functionalization of cellulose based papers, the interaction between paper fibers and functional additives must be understood. Planar cellulose surfaces represent a suitable model system for studying the binding of additives. In this work, polyelectrolyte multilayers (PEMs) are prepared by alternating dip-coating of the negatively charged cellulose derivate carboxymethyl cellulose and a polycation, either polydiallyldimethylammonium chloride (PDADMAC) or chitosan (CHI). The parameters varied during PEM formation are the concentrations (0.1–5 g/L) and pH (pH = 2–6) of the dipping solutions. Both PEM systems grow exponentially, revealing a high mobility of the polyelectrolytes (PEs). The pH-tunable charge density leads to PEMs with different surface topographies. Quartz crystal microbalance experiments with dissipation monitoring (QCM-D) reveal the pronounced viscoelastic properties of the PEMs. Ellipsometry and atomic force microscopy (AFM) measurements show that the strong and highly charged polycation PDADMAC leads to the formation of smooth PEMs. The weak polycation CHI forms cellulose model surfaces with higher film thicknesses and a tunable roughness. Both PEM systems exhibit a high water uptake when exposed to a humid environment, with the PDADMAC/carboxymethyl cellulose (CMC) PEMs resulting in a water uptake up to 60% and CHI/CMC up to 20%. The resulting PEMs are water-stable, but water swellable model surfaces with a controllable roughness and topography. |
| first_indexed | 2024-03-09T03:17:36Z |
| format | Article |
| id | doaj.art-12413deb91e841e38913972ffa4090d5 |
| institution | Directory Open Access Journal |
| issn | 2073-4360 |
| language | English |
| last_indexed | 2024-03-09T03:17:36Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Polymers |
| spelling | doaj.art-12413deb91e841e38913972ffa4090d52023-12-03T15:15:55ZengMDPI AGPolymers2073-43602021-01-0113343510.3390/polym13030435Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and PolycationsCassia Lux0Thomas Tilger1Ramsia Geisler2Olaf Soltwedel3Regine von Klitzing4Soft Matter at Interfaces, Department of Physics, Technical University of Darmstadt, Hochschulstraße 8, 64289 Darmstadt, GermanySoft Matter at Interfaces, Department of Physics, Technical University of Darmstadt, Hochschulstraße 8, 64289 Darmstadt, GermanySoft Matter at Interfaces, Department of Physics, Technical University of Darmstadt, Hochschulstraße 8, 64289 Darmstadt, GermanySoft Matter at Interfaces, Department of Physics, Technical University of Darmstadt, Hochschulstraße 8, 64289 Darmstadt, GermanySoft Matter at Interfaces, Department of Physics, Technical University of Darmstadt, Hochschulstraße 8, 64289 Darmstadt, GermanyFor tailored functionalization of cellulose based papers, the interaction between paper fibers and functional additives must be understood. Planar cellulose surfaces represent a suitable model system for studying the binding of additives. In this work, polyelectrolyte multilayers (PEMs) are prepared by alternating dip-coating of the negatively charged cellulose derivate carboxymethyl cellulose and a polycation, either polydiallyldimethylammonium chloride (PDADMAC) or chitosan (CHI). The parameters varied during PEM formation are the concentrations (0.1–5 g/L) and pH (pH = 2–6) of the dipping solutions. Both PEM systems grow exponentially, revealing a high mobility of the polyelectrolytes (PEs). The pH-tunable charge density leads to PEMs with different surface topographies. Quartz crystal microbalance experiments with dissipation monitoring (QCM-D) reveal the pronounced viscoelastic properties of the PEMs. Ellipsometry and atomic force microscopy (AFM) measurements show that the strong and highly charged polycation PDADMAC leads to the formation of smooth PEMs. The weak polycation CHI forms cellulose model surfaces with higher film thicknesses and a tunable roughness. Both PEM systems exhibit a high water uptake when exposed to a humid environment, with the PDADMAC/carboxymethyl cellulose (CMC) PEMs resulting in a water uptake up to 60% and CHI/CMC up to 20%. The resulting PEMs are water-stable, but water swellable model surfaces with a controllable roughness and topography.https://www.mdpi.com/2073-4360/13/3/435cellulose model surfacepolyelectrolyte multilayersdip-coatingcarboxymethyl cellulose |
| spellingShingle | Cassia Lux Thomas Tilger Ramsia Geisler Olaf Soltwedel Regine von Klitzing Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations Polymers cellulose model surface polyelectrolyte multilayers dip-coating carboxymethyl cellulose |
| title | Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations |
| title_full | Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations |
| title_fullStr | Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations |
| title_full_unstemmed | Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations |
| title_short | Model Surfaces for Paper Fibers Prepared from Carboxymethyl Cellulose and Polycations |
| title_sort | model surfaces for paper fibers prepared from carboxymethyl cellulose and polycations |
| topic | cellulose model surface polyelectrolyte multilayers dip-coating carboxymethyl cellulose |
| url | https://www.mdpi.com/2073-4360/13/3/435 |
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